Coke-oven door



(No Model.)

WJG. MERRIMANV.

00KB OVEN'DOOR. N-o .268,811. 4 Patented Benz, 1882.

E03,..Z JP Ip' i will!" J WITNESSES: I f m I R.

ATTORNEY.

- UNITED STATES PATENT OFFICE.

WILLIAM G. M'ERRIMAN, 0F PITTSBURG, PENNSYLVANIA.

COKE-OVEN DOOR.

SPEGIFICATIONforming part of Letters Patent No. 268,811, dated December 12, 1882.

Application filed April 14, 1882. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM G. MERRI- MAN, of littsburg, in the county of Allegheny, State of Pennsylvania, have invented a new and useful Improvementin Doors for Coke- Ovens; and I do hereby declare that the following is a. full, clear, and exact description thereof, reference being had to the accompanyancing said door, all of which will hereinafter more fully and at large appear.

To enable others skilled in the art with which my invention is most nearly connected to make and use it, I will proceed to describe its construction and operation.

In the accompanying drawings, which form partofmyspecification,Fignrelisafrontelevation of acoke-oven furnished with my improvement in doors. Fig. 2 is a vertical section of the front wall of a coke-oven and of my improvement in doors. Fig. 3 is a front view enlarged of my improvement in doors for c0ke-" ovens.

Reference being had to the accompanying drawings, A represents the coke-ovens, which are of the ordinary construction. B represents the frame for the door 0, and is provided with ribs D, which serve the purpose of strengthening-strips and guides for the door D, which consists of a cast-ir0n casing lined with fire-brick. ()n the upper end of said cas ing are lugs e, to which are pivoted linksf, which at g are pivoted to tangent-formed levers E, pivoted at h to the upper end of -the frame B, said levers being furnished with gear'teeth i, which mesh into each other. On theouter end of levers E is attached a cord or chain, F, to the lower end of which are attached weights G for the purpose otbalancing the door (1. By this arrangement of the door-frame B, doors 0, levers E, and weights G the door U can be manipulated with great ease and facility, and held in any desired position with relation to the doorway of the coke-oven.

In the ordinary construction of coke-ovens they are charged at the top with the coal to he coked, and the doorway or the opening for withdrawing the coke is temporarily closed with brick laid with clay orloam mortar. This layingot' the brick at each charging of the oven and tearing them down each time the coke is withdrawn from the oven is attended with much cost, labor, and loss of time, which is entirely avoided with my improvement,it being apparent. that the doorway of the oven can be opened and closed by my improved door with case and facility and without loss of time, and can be adjusted for the purpose of admitting air to the'coke-ovens at the deasure of the operator.

Having thus described my improvement, what I claim is- In a coke-oven, the combination of the frame B, having ribs or guides D, door C, links], levers E, having gear-teeth i, meshingiinto each other,and weigh ts G, all constructed, arranged, and operating substantially as shown and described. V

- 'W. G. MERRIMAN.

WVitnesses:

A. 0. JOHNSTON, K. L. SMITH. 

